AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2024 Issue 1; Ask the Editor

Underdosing for Medications Taken as Needed (PRN)

A patient presents to the Emergency Department with shortness of breath due to an exacerbation of asthma. The patient did not take his PRN medication, albuterol, because he lost his inhaler. Coding Clinic First Quarter 2021, pages 12-13, clarified that PRN medications are not classified as long-term drug therapy. Is it appropriate to assign a code for underdosing when a PRN medication, such as albuterol is not taken? ...

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